diff -r 40e2940605a3 -r 4bec0525ef1b src/linetypes/conditionaledge.h
--- a/src/linetypes/conditionaledge.h	Wed Mar 18 17:11:23 2020 +0200
+++ b/src/linetypes/conditionaledge.h	Thu Mar 19 21:06:06 2020 +0200
@@ -18,12 +18,11 @@
 		const Color colorIndex = ldraw::edgeColor);
 	ConditionalEdge(const std::array<glm::vec3, 4>& vertices, const Color color);
 	QVariant getProperty(Property property) const override;
-	SetPropertyResult setProperty(
-		Property property,
-		const QVariant& value) override;
 	QString textRepresentation() const override;
 	int numPoints() const override;
 	const glm::vec3& getPoint(int index) const override;
 	glm::vec3 controlPoint_1 = {};
 	glm::vec3 controlPoint_2 = {};
+protected:
+	void setProperty(SetPropertyResult* result, const PropertyKeyValue& pair) override;
 };